exhaust manifold 4-1 vs 4-2-1

[ELora]

hey guys!
somebody can tell me what is the difference between a 4-1 header and a 4-2-1
what is the benefits of each other

 

[clockwoRk]

You'll probably find quite a bit of info if you search for it. In short 4-1 for topend power and a 4-2-1 gives more throughout the rev range.
Obviously there's a lot more to it than that. Length and diameter of the primaries etc. tbh I would just ignore that and get the best your money can buy whatever the configuration. But I would say it's always better to get one with with a 2.5" collector.

 

[elchunk]

S E A R C H ! ! ! ! !

you are not the first person on a honda forum to ask this!

 

[Rich777]

All the information you'll ever need. http://lmgtfy.com/?q=4-2-1+vs+4-1+Header

 

[ELora]

well I got my answer thanks!

 

[Rich777]

Lol, i would of thought so.